A Basic Optics Question

1. If you shine white light into a pyramid, a spectrum of colors is produced. What happens if you shine this white light if the pyramid is submerged in an aquarium?

a) No spectrum is produced
b) A spectrum is produced, but with the colors in reverse order
c) A spectrum is produced with the distance between red and violet shorter
d) a spectrum is produced with the distance between red and violet larger
e) a normal spectrum is produced